Walking stick with seat?

I’m thinking of getting one but there are lots to choose from - I wonder if Gransnetters could advise on the best type to buy, and are the most expensive ones necessarily the best? I’ll be going on a coach holiday soon, which could involve some walking but since booking I’ve been diagnosed with mild cardiomyopathy. I can cope as long as I pace myself and rest occasionally when walking. I’m hoping a walking stick with a seat will help, particularly with standing in long queues at passport control.